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CVE-2021-47509

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CVE-2021-47509

Published: May 24, 2024

Modified: May 11, 2026

PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Limit the period size to 16MB Set the practical limit to the period size (the fragment shift in OSS) instead of a full 31bit; a too large value could lead to the exhaust of memory as we allocate temporary buffers of the period size, too. As of this patch, we set to 16MB limit, which should cover all use cases.

VendorProductVersions

Linux

Linux

affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < d1bb703ad050de9095f10b2d3416c32921ac6bcc
affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < b02a41eebcc36d4f07196780f2e165ca2c499257
affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < be55f306396cd62c6889286a7194fd8b53363aeb
affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < 2e54cf6794bf82a54aaefc78da13819aea9cd28a
affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - < 76f19e4cbb548e28547f8c328aa0bfb3a10222d3

+3 more versions

Linux

Linux

affected
2.6.12
unaffected
0 - < 2.6.12
unaffected
4.4.295 - <= 4.4.*
unaffected
4.9.293 - <= 4.9.*
unaffected
4.14.258 - <= 4.14.*

+5 more versions

References

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